1422020321 has 8 divisors (see below), whose sum is σ = 1428986664. Its totient is φ = 1415065600.

The previous prime is 1422020317. The next prime is 1422020323. The reversal of 1422020321 is 1230202241.

It can be written as a sum of positive squares in 4 ways, for example, as 20566225 + 1401454096 = 4535^2 + 37436^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1422020321 - 2² = 1422020317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1422020321.

It is not an unprimeable number, because it can be changed into a prime (1422020323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332231 + ... + 336483.

It is an arithmetic number, because the mean of its divisors is an integer number (178623333).

Almost surely, 2^1422020321 is an apocalyptic number.

It is an amenable number.

1422020321 is a deficient number, since it is larger than the sum of its proper divisors (6966343).

1422020321 is a wasteful number, since it uses less digits than its factorization.

1422020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1422020321 is about 37709.6847109599. The cubic root of 1422020321 is about 1124.5236688987.

Adding to 1422020321 its reverse (1230202241), we get a palindrome (2652222562).

The spelling of 1422020321 in words is "one billion, four hundred twenty-two million, twenty thousand, three hundred twenty-one".